FIELD: geology.
SUBSTANCE: device has base, mast, jointly mounted thereon, telescopic element for changing its angular position, carriage with engine and rotator, moveably placed on mast posts, hydraulic cylinder for moving carriage, directed downwards by its rod, and hydraulic system. Hydraulic cylinder is placed between upper and lower mast bars, its shell is rigidly fixed in carriage, and rod is connected to lower bar. Upper bar and/or carriage body are made in form of tank for working liquid of hydraulic system. Hydraulic system pump is placed on rotator, while cinematic link of engine to pump and/or rotator is made in form of wedge-belt transfer link, and connections of leading and following sheaves with their shafts are made threaded with oppositely directed thread. Between rotator and hydraulic cylinders for protection of rod a skirt is placed in form of ribbon, fixed on ends of mast.
EFFECT: lesser dimensions, higher mobility.
4 cl, 8 dwg
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